Dumping car



May 19, 1925.

1,538,499 c. P. AsTRoM DUMPING CAR Filed Ma1-y29t 1924 2 Sheets-$hcaet l t"2a /5 7 25 '3' /6 24 26 3 2l /a 26 O Sfr-'f j ,9 l l Nw i En mi! Q l mr fo *Lea 2N-- T e4ff- 30 INVENTOR www' ATTORNEY Filed May 29. 1924 2 Sheets-Sheet 2 Patented May 19, 1925.

v UNITED 'Nl-Aifs'v :PATENT OFFICE.

CARL r. ASTRON, OFIESTORANGE, NEW JERSEY, AssiGNOn ytro vM. H. TREADWELL COMPANY, A. CORPORATION OF NEW YORK.

`nmvrrINe CAR.

appncation ined May 29,

To all 'whom it may concer/n: t 1

Beit known that I, CARL P. As'rRoM, a citizen of the United States, and resident'of East Orange, in thecou'nty of Essexand f State of New Jersey, have invented certain new and'useful Improvements in Dumping Cars, of which the following' is a specification.,l

This invention relates to tilting and laterally moving dumping cars, and has for its object .to enable such a car body to be operated by a rotary motor geared thereto by reduction gearingl without v4imposing l undue .strains upon the mechanismjin case "cinders`-or other obstructions may clog a. rack or becauseV of change in the angular relation between the car'body tilting axis and the-driving mechanism. n l A. usual form of tilting and laterallyimoving dumping car is mountedlto .tilt` and roll on trunnions along atrack; lone trunnion Vis, driven by reduction" gearing" from av rotary motor.' There 'is considerable danger of dirt, ycinders',y etc. getting on the track `or into 4the teeth of the rackV paralleling the track 4to `prevent Vslipping of a .trunnion Should suoli dirt clog the track, or rack teeth, it yma ycauseone of the trunnions to be raised fan have its axis shifted relative to the driv- -=o ling mechanism with 'danger' OtIrupture of some4 part of the drivingmechanism. v, By this invention, Aa liexible driving` coupling between the drivingmotor and the driven trunnion is providedy so as to, permit skewing of the car body .withoutpreventing f it from beingoperated. This invention is l jadapted yfor cars which'dump to only one side,`orthe` end, as wellk as to those'lwhich dump onboth sides. 4o In the accompanying'drawings, Figi is an rend ,vievv of a dump car body embodyy ingthis invention, vy n i Fifr 2. is'a'side viewpartly in sectionon thelme 29--2a of Figl,y y j. Fig.y 3fis an endA viewof ,a modified oonfystruction with parts broken away, v l

"Fig'gfi is a side view partly in section of the-modification showniny Fig. 3. s p

Referring 'to theidrawings, the numeral 10 indicates theunder'frame supported at -.each tendon 4the usual `trucks 11, provided with'v customary coupling." equipment fand v having on top a'platform 12 on which are f cured within the trunnion 34.

Vits usual. alinement. rvidedto take n) yber 33 duringr "1924.1 serial No. 716,551.

mounted supports for the track rails 13 and the rack 1 4. The dumping car body 15 is mounted in a suitable yoke 16 provided at theends with trunnions 34 adapted to roll along the track rails 13. Pinions 17 mesh lwiththe teeth ofthe rack 14 to preventl slipping of the trunnionsA on the rails. On,

one of the platforms -12 is provided thek electric motor 18 driving the shaft 22 through gears 19 and 20. The shaft 22 is provided 'with a stationary bearing 21 supported from 'the platform 12. Also on shaft 22 is the universal coupling 23 actuating the threaded driving member 24 which parallels the .track but is unsupported at the other end., The

driving member 24 is provided with a low pitch screw so that the car will never actuate the mot-or. On the driving member isa `nut 25 secured within the bifurcated end portion 26y of the member 27 rotatably sevThe member 27 1s securedln position by a bolted iiange 30, or other fastening means, and has two bearing surfaces 28l and ,'29 inside thek trun mon. If d`es1red, the securing means for the flange 3()V mayy be made to break andallow the! member 27 to. come out of the trunni'on incase the car body rolls oii1 the opposite rail.` Projections 31'on the nutretain the same within the bifurcatedend portion 26 of the lmember 27. Oneor both prongs of 'thebifurcatedend maybe removably secured by means of bolts or otherwise fdr the Vpurpose of' inserting the' nut and its'projections. The stationary bearing 21` is adapted to take up axial .thrusts in either direction incident to tilting the dumping carlbody.

InFig. 3 is showna modified construction wherethe .motor 18 provided with a pinion j19engages teeth insidefthe `large gear 32 fmounted on an extension of the threaded driving member 33." The nut 25 cooperates with the driving member 33 in substantially -the same mannerl as in Fig. 1. Instead of the universal coupling 23 a spherical bearing 35 is provided on member 33, said mem-r ber rotating within the ball 36 and the ball being capable of moving within its housing 37 with a'I1y,`Inove1nent of member 33 out of Means. may be proany axial thrust in memmping'movement without transmitting the same to the spherical bearing or if desired this bearing itself may be so designed.

A possible cause 'forthe trunnion axis having its normal direction relative to the driving member 24 and the track 13 changed is the possibility ot' dirt or slag collecting on the track .13 or rack l-t with the result that the teeth of the rack and pinion become disengaged and there exists the possibility of one trunnion being moved ahead or behind the other and the teeth ot the rack being re-engaged with the trunnion axis out ot' its normal position relative to the track and driving member. For the purpose ot preventing breakage and undue strains in case the. angle of the trunnion axis is changed, with regard to the track and driving member, the flexible couplings illustrated in Figs. 1 and 3 are placed between the motor and the driven trunnion so Ithat the driving member 2% or 33 may be moved out ot' position without transferring any strains to the driving motor. ln Fig. 1 the `shaftt 22 remains in fixed alinement at all times and does not change with any movement ot the driving member 24. In Fig. 3 the corresponding lshaft on which the driving gear 32 is mounted, is a projection ot the driving member 38 and this shat't together with the gear 32 may oscillatc when the driving member is moved out of alinement. The spherical bearing 35 in Fig. 3 makes this possible. Any axial thrusts upon the driving member 33 are taken up by the spherical bearing. The teeth of the pinion 19 and gear 32 are not ordinarily subjected to any pressure but in case the gear 32 oscillates a large amount the teeth of the pinion 19 and gear 32 may be elongated to :allow the relative movement to take place between these two members. The dotted line in Fig. 1 shows how the axis of the driving member may be raised in case slag or other dirt causes the trunnion axis to be raised. The dotted lines for the driving member and gear in Fig. 3 also indicate the lextent ot movement which may be required it the trunnion is raised to clear a rack tooth, In Fig. 1 the movement occurs about the universal jointwhile in Fig. 3 the movement is about the center of the spherical bearing.

Among the advantages of this invention may be mentioned the adaptability lof the trunnion axis to become misplaced without imparting any dangerons strains to any part .of the dri-ving` mechanism. The universal coupling 23, or its equivalent the spherical bearing 32, perfmits movement of the driving member 24 or 33 in different planes such as would be necessary in case the driven trunnion were raised and moved ahead or behind the other. The particular embodiment illustrated is well adapted for use .with a rotatable motor.

l claim:

l. ln a tilting and laterally moving dumping car, a car body having tilting and rolling supporting trunnions, a rotary motor and driving mechanism connected to one trunnion, said mechanism including flexible means permitting shitting of the trunnion axis relative to the motor axis Without straining the driving mechanism or motor.

2. In a tilting and laterally moving dumping car`I a car body having tilting and rolling supporting trunnions. driving means Jfor one trunnion, a rotatable member` parallel- `ing the path of movement of said trunnion and connecting said triumion with said driving means, and a pivotal mechanism tor said member permitting a rela-tive shifting between the ytrunnion axis and that oi the rotatable member.

3. In a tilting and laterally moving dumping car, a car body having ,tilting and rolling supporting` trunnions, a rotary motor for driving at least one trunniomn rotatable member extending along the path ot movement ot said trunnion and connecting said motor and trunnion, and pivotal mechanism between said motor and trunnion permitting` movement of said rotatable niember in two planes.

Ll. The combination with a dumping car, of a track, trunnions supporting said car and mounted to roll on said track. a driving means for tilting said car, a rotatable .member paralleling said track, and connecting said means with at least one trunnion, and a universal joint between said member and said means.

5. The combination with a dumping car, of a. track, trunnions supporting said car and mounted to roll on said track, a rotatable driving means for tilting said car, and yieldable mechanism between said means and Isaid trunnions permitting the trunnion axis to be shifted lrelative to the track without disconnecting said ydriving means from said car.

46. The combination with a Vdumping car, of Ya track, trunnions supporting said car and mounted jto roll on said track, a rotatable driving means for tilting said car, a threaded shaft paralleling said track land driven b v said means, a nut engaging said shaft and rotatably connected to atrunnion, and mechanism between said shaft and said means :tor permitting the trunnion axis to be angularlv displaced without disconnecting said driving means.

7. The combination with a dumping car, of a track, trunnions supporting said car and mounted to roll onl said track, a rotatable driving means for tilting said car, a threaded shaft paralleling said track and driven by said means, a nut engaging said shaft, a bifurcated pin rotatably mounted Within a trunnion and receiving lsaid nut of a track, trunnions supporting said car` and mounted to roll on said track, a rf.- tatable driving means fortilting ysaid car, a rotatable member paralleling said ktrack and connecting said means with at least one trunnion, and a spherical bearing between said member and said means.

9. The combination with a dumping car, of a track, trunnions supportingsaid car and mounted to roll on said track, a rotatable driving means for tilting saidl car, a threaded shaft paralleling said track and driven by said means, a nut engagingsaid shaft, a bifurcated pin rotatably mcunted within a trunnion and receiving said nut within its bifurcated portion, a connecting member for said nut and bifurcated portion of the pin with the axis of said connecting member intersecting. 'the axis ot said pin and rotatable member, and a pivotal mechanism between said shaft and means for permitting the trunnion 'axis to be angularly shifted without disconnectingl said driving means.

10. The combination with a dum ing car,

of an under frame, a track on said under frame, trunnions supporting said car to roll on said track, a threaded member'extending across said under frame adjacent a trunnion, a nut engaging said member and rotatably connected to said trunnion, an electric motor secured to said under frame below said threaded member, gearing for driving said member from said motor, and iiexible means between said motor and trunmon enabling the angle between the horlzontal projection of the trunnion axis andy kthreaded member axis to be changed'without disconnecting the motor, or the imposition of substantial strains.

11. The combination with a dumping car, of an under frame, a track on said under frame, trunnions supporting said 'c'ar to roll on said track, a threaded member intersecting said trunnion axis and rnormal thereto, a nut engaging said member and rotatably connected with said trunnion, a rotary motor secured to said under frame below the threaded member, gearing for driving said member from said motor, and flexible coupling means between said motor and trunnion enabling the angle between the trunnion axis and `threaded member to be changed without disconnecting said motor, or the imposition of substantial strains.

Signed at New York, in the county `of New York and State of New York this 28th day of May A. D. 1924:.

CARL P. ASTROM. 

